{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1666762",
    "entityType": "User",
    "nonce": "0x9d0b88c67096f35c4e1b017a0645d166e2976c6cd9bbd6a79be540a51e420dca",
    "signature": "0x654b4b315a0d9055266c36b73ca4143e0776890b278b4be43c03dac65f66110a6d9e541d97b515101314f59fc79e22b4f1034d2f23e850f4b68b7eb20ecab2231b",
    "signer": "0x94e0dDC50579175818AaCFBC9aba8B065fEf2a55",
    "userId": "460147282"
  }
}